package com.eagledata.common.utils;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

/**
 * 客户端工具类
 * 
 * @author ruoyi
 */
public class ServletUtils {
	/**
	 * 获取getStrAttribute
	 */
	public static String getStrAttribute(String name) {
		return StringUtil.valueAsStr(getRequestAttributes().getRequest().getAttribute(name));
	}

	/**
	 * 获取getIntAttribute
	 */
	public static int getIntAttribute(String name) {
		return StringUtil.valueAsInt(getRequestAttributes().getRequest().getAttribute(name));
	}

	/**
	 * 获取getStrParameter
	 */
	public static String getStrParameter(String name) {
		return StringUtil.valueAsStr(getRequestAttributes().getRequest().getParameter(name));
	}

	/**
	 * 获取getIntParameter
	 */
	public static Integer getIntParameter(String name) {
		return StringUtil.valueAsInt(getRequestAttributes().getRequest().getParameter(name));
	}

	public static ServletRequestAttributes getRequestAttributes() {
		RequestAttributes attributes = RequestContextHolder.getRequestAttributes();
		return (ServletRequestAttributes) attributes;
	}

	/**
	 * 获取request
	 */
	public static HttpServletRequest getRequest() {
		return getRequestAttributes().getRequest();
	}

	/**
	 * 获取response
	 */
	public static HttpServletResponse getResponse() {
		return getRequestAttributes().getResponse();
	}

	/**
	 * 获取session
	 */
	public static HttpSession getSession() {
		return getRequest().getSession();
	}

	/**
	 * 是否是Ajax异步请求
	 */
	public static boolean isAjaxRequest(HttpServletRequest request) {

		String accept = request.getHeader("accept");
		if (accept != null && accept.indexOf("application/json") != -1) {
			return true;
		}

		String xRequestedWith = request.getHeader("X-Requested-With");
		if (xRequestedWith != null && xRequestedWith.indexOf("XMLHttpRequest") != -1) {
			return true;
		}

		String uri = request.getRequestURI();
		if (StringUtil.inStringIgnoreCase(uri, ".json", ".xml")) {
			return true;
		}

		String ajax = request.getParameter("__ajax");
		if (StringUtil.inStringIgnoreCase(ajax, "json", "xml")) {
			return true;
		}

		return false;
	}

}
